A reminder you get free loot with Amazon Twitch Prime account. You will need to link your Blizzard account with your Twitch account.

https://twitch.amazon.com/prime/loot/heroesofthestorm

Currently you get a free legendary loot chest, next month you get a mount and 5 rare loot chests, and month after another 5 rare loot chests.

Also loot for Paladins, Call of Duty WWII, and others